KVM PIT IRQ Bug Lets Local Users Deny Service
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SecurityTracker Alert ID: 1026559 |
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SecurityTracker URL: http://securitytracker.com/id/1026559
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CVE Reference:
CVE-2011-4622
(Links to External Site)
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Date: Jan 23 2012
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Impact:
Denial of service via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
A vulnerability was reported in KVM. A local user on the host system can cause denial of service conditions.
The system does not properly handle Programmable Interval Timer (PIT) IRQs when a virtual interrupt controller has not been set up. A local user in the kvm group on the host system can cause the host system to crash.
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Impact:
A local user in the kvm group on the host system can cause the host system to crash.
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Solution:
A proposed patch is available at:
http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564
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Vendor URL: linux-kvm.org/ (Links to External Site)
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Cause:
State error
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Underlying OS:
Linux (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Mon, 23 Jan 2012 21:52:53 +0000
Subject: Linux Kernel QEMU KVM
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CVE-2011-4622 kernel: kvm: pit timer with no irqchip crashes the system
http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/83564
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